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-rw-r--r--testsuite/tests/generics/GShow/GShow.hs3
1 files changed, 2 insertions, 1 deletions
diff --git a/testsuite/tests/generics/GShow/GShow.hs b/testsuite/tests/generics/GShow/GShow.hs
index cfe0230411..24c1959ec3 100644
--- a/testsuite/tests/generics/GShow/GShow.hs
+++ b/testsuite/tests/generics/GShow/GShow.hs
@@ -119,7 +119,8 @@ instance GShow Char where gshowsPrec = showsPrec
instance GShow Double where gshowsPrec = showsPrec
instance GShow Int where gshowsPrec = showsPrec
instance GShow Float where gshowsPrec = showsPrec
-instance GShow String where gshowsPrec = showsPrec
+instance {-# OVERLAPPING #-}
+ GShow String where gshowsPrec = showsPrec
instance GShow Word where gshowsPrec = showsPrec
instance GShow Bool where gshowsPrec = showsPrec